Definition of experimenter effect in English:

experimenter effect

Line breaks: ex|peri|ment¦er ef¦fect

noun

An influence exerted by the experimenter’s expectations or other characteristics on the results of an experiment, especially in psychology.
More example sentences
  • This looks like an experimenter effect, although it is important to note that the difference between the scores for each agent was nonsignificant.
  • The experimenter effect may explain why many experiments can be conducted successfully only by one person or one group of persons, while others repeatedly fail in their attempts to replicate the results.
  • Our study is the first to provide evidence of an experimenter effect in investigating the belief-cognitive ability relationship.

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